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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2005-11-08 19:08:05 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2005-11-08 19:08:05 +0000
commit37ee16ae93a3e4ae7dd51beb81d249f5f12a55c2 (patch)
treea6cf9773ddb5eae9f173c6a9c9d6120faa5688a4 /arch/arm/Kconfig
parent3b6353fae0d7ba772d7eb2651727332c9e9c74ac (diff)
[ARM SMP] Add core ARM support for local timers
Add infrastructure for supporting per-cpu local timers to update the profiling information and update system time accounting. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/Kconfig')
-rw-r--r--arch/arm/Kconfig10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 91d5ef3397b..3bfef0934c9 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -356,6 +356,16 @@ config HOTPLUG_CPU
Say Y here to experiment with turning CPUs off and on. CPUs
can be controlled through /sys/devices/system/cpu.
+config LOCAL_TIMERS
+ bool "Use local timer interrupts"
+ depends on SMP && n
+ default y
+ help
+ Enable support for local timers on SMP platforms, rather then the
+ legacy IPI broadcast method. Local timers allows the system
+ accounting to be spread across the timer interval, preventing a
+ "thundering herd" at every timer tick.
+
config PREEMPT
bool "Preemptible Kernel (EXPERIMENTAL)"
depends on EXPERIMENTAL